The Human Connection Challenge Lab 4: Linux Official Walkthrough Guide

Hello,

Are you running the wget command after you have sent the meterpreter payload, but before it has timed out? Metasploit will automatically listen for a connection back for a short period of time and then time out if it receives nothing, so run the exploit command on metasploit and then the wget command whilst it's hanging. You could also open up a separate listener as a job in metasploit or simply a netcat listener on your locally machine before you've executed the shell via wget. Hope that helps!